一般现在时、一般过去时、一般将来时、现在进行时
初中语法
一般现在时、一般过去时、一般将来时、现在进行时是四种不同的时态。它们分别用于描述不同的时间和动作形式。一般现在时表示经常性或惯性的动作，通常使用动词的原形或第三人称单数形式。常用的时间状语有always、sometimes、usually、often、every morning、every week、twice a week等等。
现在进行时表示此时此刻或现阶段正在进行的动作，通常使用am/is/are+动词的ing形式。常用的时间状语有now、right now、at the moment、look、listen等。
一般将来时表示将来发生的事情或计划，通常使用will/shall+动词的原形或am/is/are+going to+动词的原形。常用的时间状语有in the future、next week/month、tomorrow、in two weeks等等。
一般过去时表示过去某一时刻或过去某一段时间所发生的动作，与现在无关。动词的变化规则有以下几种：1）大多数动词在词尾加“S”；2）以辅音字母加“y”结尾的，要先将“y”变为“i”，
然后在加“es”；3）以“s。x。ch。sh”结尾的，在词尾加“es”；4）以“o”结尾的动词，加“es”。
现在进行时使用动词的ing形式，变化规则有以下几种：1）一般动词直接在词尾+ing；2）以不发音e结尾的动词，先去e再加ing；3）以重读闭音节结尾且末尾只有一个辅音字母的动词，双写末尾字母，再加ing。
3、一般过去时——动词的变化规则
一般过去时是描述过去发生的事情，动词的变化规则如下：
1)一般在动词后加-ed。
如:play-played。offer-offered。weigh-weighed。destroy-destroyed。sign-signed
2)在以字母e结尾的动词后，只加-d。
如:like-liked。provide-provided。hate-hated。date-dated
3)在以“辅音字母+y”结尾的动词后，则改y为i，再加-ed。
如:supply-supplied。study-studied.
4)在以单短元音的重读闭音节结尾且，末尾只有一个辅音字母的动词后，双写最后一个辅音字母，再加-ed。
如:plan-planned。refer-referred。regret-regretted。ban-banned
5)还有一些不规则变化的要单独记。
如：do-did。know-knew。am/is-was。cut-cut。e-became
练一练：
1、写出下列动词的形式
1）写出下列动词的第三人称单数形式
know knows。listen listens。brush brushes。watch watches
go goes。do does。have has
2）写出下列动词的ing形式weigh的过去式
go-going。work-working。close-closing。ing。ing
get-getting。sit-sitting
3）写出下列动词的过去式
go went。do did。have had。play played
know knew。build built。XXX。listen listened
二、用所给动词的正确形式填空。
1.He often reads (read) 21st Century XXX.
2.Is he enjoying (enjoy) his stay here?
3.We will build (build) a lab next year.
4.He is writing at the moment.
5.I was in Beijing last year.
6.He is taller than I am.
7.Where did he tell her the news?
8.I’m going to work hard.
fly - flew
cut - cut
9.She can help me with my English.
10.They are reading newspapers now.
综合练：
1.We often play on the playground.
2.He gets up at six o'clock.
3.Do you brush your XXX every morning?
4.What does he usually do after school?
5.XXX studies English。Chinese。Math。Science。and Art at school.
6.Mike went to the park with his sister XXX.
7.Last night。she watched TV with her parents.
8.Will Mike read English tomorrow?
9.How many lessons does your classmate have next week?
10.What time will his mother do the housework tomorrow?
11.Don’t make a noise。Grandpa is sleeping.
12.It took me two hours to XXX.
13.What does your mother do every evening。XXX.
14.Look。She is doing her XXX.
15.There will be a football match on TV next Sunday.
16.They are visiting the Great Wall now.
17.The earth moves around the sun.

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。